Question

Study the section through leaf given and match the correct features.
(a) What does A represent?
(b) Give another name for A cells
(c) What function do they perform?
(d) This is a leaf of which plant?
1. Dicot
2. Monocot
3. Storage of salt crystals
4. Folding and unfolding of leaves
5. Bulliform cells
6. Motor cells

• A. (a)- 5, (b)- 6, (c)- 4, (d)- 2
• B. (a)- 4, (b)- 6, (c)- 5, (d)- 2
• C. (a)- 5, (b)- 2, (c)- 4, (d)- 6
• D. (a)- 5, (b)- 6, (c)- 2, (d)- 4

Answer 1

The correct option is A (a)- 5, (b)- 6, (c)- 4, (d)- 2

Bulliform cells are large, bubble shaped epidermal cells that occur in groups on the upper surface of the leaves of many grasses (monocots). Loss of turgor pressure in these cells causes leaves to roll up during water stress. During drought, the loss of moisture through vacuoles induces bulliform cells to cause the leaves of many grass species to close as the two edges of the grass blade fold up toward each other. They are also called as motor cells or hygroscopic cells.
Thus, the correct answer is option A.